CHEM 1212 Module 10 Exam Spring 2005 Name:___________

Part H: LaChatelier’s Principle Questions

Based on the followinq Equations, use the choices to describe the equibrium shifts, if any, when the following conditions are changed:

a. shifts left b. shifts right c. No effect

4 HCL (g) + O₂ (g) ç è 2 H₂O (g) + 2 CL₂ (g)

_____1. 1 mole of Chlorine gas is injected after equilibrium is reached

_____2. Water is removed after equilibrium is reached

_____3. Additional Heat is applied to system after equilibrium is reached,

(the reaction is exothermic)

_____4. Nitrogen gas is injected into the vessle after equilibrium is reached

_____5. Additional Oxygen gas is injected after equilibrium is reached

_____6. Increasing the size of the vessle from 1 to 3 liters after eq is reached

PCL₅ çè PCl₃ + CL₂

_____7. Chlorine gas is injected into the vessle

_____8. Additional Heat is added to the system after equilibrium is achieved

(the reaction is endothermic)

_____9. Nitrogen gas is injected into the vessle

_____10. The gases are compressed into a vessle ½ half the original size

after equilibrium is achieved.